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Showing 1 to 20 of 855 for “"Two Species"”.
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Glycerol permeability in two species of Peromyscus
… were soo demonstrated among a number of species within a single genus. Levine (1943) investigated species differences in rates of osmotic hemolysis within the genus Peromyscus. The four species studied were: P. eremicus fraterculus, P. leucopus noveboracensis, P. gossypinus palmarius, and …
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Reproduction And Survivorship Of Two Species Of Daphnidae
… all temperatures from survivorship data for each species. Replacement rates of S. kingi and S. serrulatus, respectively, were 0.715 and 2.789 at 10°C, 2.637 and 3.310 at 15°C, 3.332 and 5.133 at 20°C, and 12.469 and 8.936 at 25°C. Intrinsic rates of population increase, obtained by iteration to a …
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Nest Morphogenesis and Population Ecology of Two Species of Formica
<p>Two species of thatching ants (Formica obscuripes and F. oreas comptula) are common to the ecotone and woodland habitats of the Forest River Biology Station near Inkster, Grand Forks County, North Dakota. The general ecology for each species was determined with emphasis on mound morphogenesis, …
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Relation between tolerances and distribution of two species of Ephemeroptera
… in the laboratory for aquatic nymphs of two mayflies, Baetis harrisoni Barnard 1932 and Choroterpes (Euthraulus) bugandensis (Kimmins 1956). These limits have been examined in the light of available information on the ecology of the nymphs, in order to see to what extent the distribution …
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Comparative anatomy and biology of two species of the asteroid genus pisaster
… to make an extensive comparison of the common species of Pisaster.</p><p>Detailed comparison between Pisaster brevispinus and Pisaster ochraceus have been made only by Fisher (1930) and Verrill (1914). Both of these investigators restricted their observations largely to the endoskeleton and its …
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Life history biology and soil characteristics of two species of Arctomecon (Papaveraceae)
Two rare plant species of the Mojave Desert were investigated in this study. Life history and reproductive data as well as vegetative associates and soil characteristics for Arctomecon californica Torr. and Frem. and Arctomecon merriamii Cov. were collected. Results for the life history and …
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Cytological and Biochemical Studies of Male Sterility in Two Species of Drosophila
… melanogaster mutant ms(3)K81 were examined by two-dimensional gel electrophoresis, isoelectric focusing and Western blotting to determine the biochemical basis for sterility. One protein, KRP60, was consistently reduced in sterile males. This protein may play a role in the normal function of …
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Studies on the Microsporidium, Octosporea Muscaedomesticae in Two Species of Calypterate Diptera
… Octosporea muscaedomesticae infects many species of calypterate flies. When isolated from S. bullata, P. regina, and A. obliqua, O. muscaedomesticae showed significant differences in shape and size of the spores. It is not known whether these differences represent different species or a …
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Morphological and biological studies on two species of Chionaspis (Homoptera: Coccoidea: Diaspididae)
… for microscopic study. The biologies of the two species in Blacksburg, Virginia were studied using weekly collections. Both species were bivoltine. C. americana overwintered mainly in the egg stage; the first brood hatched about April 20, and the second brood about July 25, in 1972. C. …
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The Effects of a Reservoir on Genetic Isolation in Two Species of Darters
… restrict migration, the genetic diversity of two species of darter, the rainbow darter <i>Etheostoma caeruleum</i> Storer and the Highland Rim darter <i>Etheostoma kantuckeense</i> Ceas and Page, was determined from populations inhabiting the Barren River Lake drainage basin. Between ten and …
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NOVEL ASPECTS OF ULTRASTRUCTURE IN TWO SPECIES OF CYANOBACTERIA (AGMENELLUM QUADRUPLICATUM, MASTIGOCLADUS LAMINOSUS)
… morphology and ultrastructure were examined in two species of cyanobacteria. A complete, three-dimensional, ultrastructural reconstruction of the unicellular cyanobacterium Agmenellum quadruplicatum was carried out by means of high-voltage electron microscopy of thick sections and computer-aided …
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Analysis of the Phenotypic Variation of Odontometric Traits in Two Species of Mice
Made available in DSpace on 2014-12-10T18:13:33Z (GMT). No. of bitstreams: 1 6808144.pdf: 4820048 bytes, checksum: 962bc6db555dfd2efa087463ac288be0 (MD5) Previous issue date: 1967
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Phase Diagram of a Driven Lattice Gas of Two Species with Attractive Interactions
… phase diagram of an interacting lattice gas of two species of particles and holes, driven out of equilibrium by a local hopping bias (denoted by `E'). Particles interact by excluded volume and nearest-neighbor attractions. We present a detailed Monte Carlo investigation of the phase diagram. …
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Gene flow and population differentiation in two species of goodeid fishes (Cyprinidontiformes: Goodeidae)
… by electrophoretic analysis of populations of two species of goodeid fishes, Goodea atripinnis and Chapalichthys encaustus, from lakes and streams on the Mesa Central of Mexico. Microgeographic differentiation was observed among continuous stream populations of Goodea. Highly significant genic …
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